Leg No.2 - Horseshoes No.1 = 1.2

Cut out the centre area on both group parts. These pieces will be assembled large, small, large, small and so on. This will give the 'groove' effect which can be seen running around the inside edge of the horseshoe.

Above picture shows me starting to cut out the recess areas.

I've only cut through some of the pieces to achieve the correct depth.